Rona's Vortex⁣ - Dominaria United⁣ (Uncommon)⁣ [63]

Rona's Vortex is an instant spell that allows you to return a creature or planeswalker you don’t control to its owner’s hand for just one blue mana. If you pay an additional two colourless and one black mana (the kicker cost), instead of going to their hand, that permanent goes to the bottom of its owner’s library, which can be particularly useful for dealing with powerful threats that you want to keep out of play for a longer period. This card is great for temporarily removing a troublesome creature or planeswalker, but it requires careful timing and resource management, as the kicker cost can be quite steep if you're not set up to pay it.